Mamiya RB67 Help!

[alexraise]

I am using a Mamiya RB67 Pro-S with a forked cable release.
Placing the shutter on T is NOT giving me an extended shutter. Any ideas?
The 'whirr' of the open shutter that lasts for 1 second when I use a 1 sec shutter is not there when I place it on T, it just opens and closes instantly.

?????:bang:

 

[Chris101]

You didn't say which lens, but I have several diaphragm shuttered lenses so I am somewhat familiar with how they work. The whirring noise is the spring based timer in the shutter that holds it open for a specific amount of time. In T mode, the timer is not used, and the whir does not occur.

Mamiya's T mode is different than others I have encountered. Tripping the shutter opens it, but you need to either change the shutter speed dial to something other than T or cock the camera to close the shutter. Weird and unruly, I know.

Take your camera and look through the lens so you can see the shutter operate. Trip it in T mode. Did it open and stay open? That is a feature, not a bug as they say.

 

[Chris101]

If the shutter is closing immediately when you release it, then there may be something wrong with it, but don't go by the sound, actually look at it.

 

[alexraise]

I see

I see

I see what you're saying. That 'whir' sound that I expect to hear isn't there because the camera isn't using its timer. I do hear a satisfying click when I change the shutter speed. And yes, that is a weird and unruly method of ending a shutter, especially when it needs to be precise.
This camera is quite a challenge for me in a lot of ways, right down to its weight and size.
I appreciate the forum AND the camera help.
I'll take some test shots to see if it's working, but I think you've cleared it up for me.
Thanks again,
Happy Thursday! 🙂

 

[alexraise]

re: your second reply

re: your second reply

Hey, you mentioned look at "it." But the viewer just sees black until I cock the shutter again, regardless of the shutter speed. What are you referring to look at?

 

[Chris101]

Look in the front of the lens (like you are photographing your face.)

 

[jan normandale]

most of these MF SLR style cameras like Bronica SQ, Hasselblad or Mamiya RB do not keep the shutter open in 'bulb mode' so if you are shooting for in excess of 1 - 2 sec's depending on the camera then the cable release will open the lens shutter and it will close if you take your finger off the cable release. That's what the locks on the cable releases are for. When you shoot at speeds of a second (or whatever shows on the lens barrel for max time) or less then the timer in the shutter is engaged and it can be heard as it progresses to time out and close itself. So exposures longer than shown on the lens barrels usually require a handheld timer or use your watch along with a cable release.

What Chris said is a better description of events however a second reiteration is often helpful.

Read your manual if you haven't you definitely should. Good luck

 

[alexraise]

all better!

all better!

Well, some times are more humbling than others.
This is one of those times.

You have literally just changed my relationship with this behemoth.

Thank You!
😀

 

[alexraise]

thank you both

thank you both

jan normandale, thank you for the help, but as you said, Chris cleared it up (and humbled) me. My previous praise was for Chris (forums and camera help)

I did find the manual online but it doesn't account for amateurs who don't equate 'whirring' sounds with TIMErs and NOT the shutter.

Quite a friendly environment you all have here. Thank you very much!